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Marketable Securities (Tables) | 3 Months Ended
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Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Debt Securities, Available-for-Sale | The following table summarizes information regarding the Company’s short-term and long-term marketable securities as of March 31, 2024 and December 31, 2023:
| March 31, 2024
(in thousands) | Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
U.S. government agency securities | $ | 15,803 |  |  | $ | — |  |  | $ | (244) |  |  | $ | 15,559 |
U.S. municipal securities | 4,636 |  |  | — |  |  | (63) |  |  | 4,573 |
Total marketable securities | $ | 20,439 |  |  | $ | — |  |  | $ | (307) |  |  | $ | 20,132 |
| December 31, 2023
(in thousands) | Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
U.S. government agency securities | $ | 16,798 |  |  | $ | — |  |  | $ | (278) |  |  | $ | 16,520 |
Corporate debt securities | 2,511 |  |  | — |  |  | (19) |  |  | 2,492 |
U.S. municipal securities | 7,876 |  |  | — |  |  | (105) |  |  | 7,771 |
Certificates of deposit/time deposits | 249 |  |  | — |  |  | — |  |  | 249 |
Total marketable securities | $ | 27,434 |  |  | $ | — |  |  | $ | (402) |  |  | $ | 27,032 |
Investments Classified by Contractual Maturity Date | The March 31, 2024 balance of available-for-sale debt securities by contractual maturity is shown in the following table at fair value. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.
(in thousands) | March 31, 2024
Due in one year or less | $ | 16,875 |
Due after one year through five years | 3,257 |
Total marketable securities | $ | 20,132 |

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